Nutritional supplement chromium picolinate causes sterility and lethal mutations in Drosophila melanogaster
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چکیده
منابع مشابه
Male-specific lethal mutations of Drosophila melanogaster.
A total of 7,416 ethyl methanesulfonate (EMS)-treated second chromosomes and 6,212 EMS-treated third chromosomes were screened for sex-specific lethals. Four new recessive male-specific lethal mutations were recovered. When in homozygous condition, each of these mutations kills males during the late larval or early pupal stages, but has no detectable effect in females. One mutant, mlets, is a t...
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A new type of hybrid sterility was investigated in D. melanogaster . Matings between strain 27 males from Para Wirra, South Australia, and Canton-S females produce 70-80% fully sterile male and female progeny. Strain 27 males produce sterile progeny when crossed to females of other geographic origins, but produce fertile progeny when crossed to a second sympatric strain. The sterility is avoide...
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The efficiency of the adult feeding method for EMS treatment in Drosophila melanogaster was studied by measuring the frequency of induced recessive lethals on the second chromosome. The treatment was most effective when mature spermatozoa or spermatids were treated and was much less effective on earlier stages. The number of mutations induced was proportional to the concentration except at the ...
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Before you make the junkyard your new jaunt, it's a good idea to take a look at some of the research on the impact of chromium supplements on metabolism and weight loss. One type of chromium (more on those in a bit), trivalent chromium, has been shown to enhance the effectiveness of insulin, a hormone that helps metabolize and store carbohydrates, fat, and proteins in the body. While researcher...
متن کاملSex-Linked Lethal Mutations Induced by Thermal Neutrons in Male and Female Drosophila Melanogaster.
HE experiments to be described are concerned with a comparative study of T the mutagenic effectiveness of thermal neutrons in producing sex-linked lethal mutations in male and female Drosophila melanogaster. Some of this work has appeared previously in abstract form (KING 1952a). Preliminary comparative studies of the mutagenic effectiveness of X-rays in producing sex-linked lethal mutations in...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 2003
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.0636646100